Sangam: A Confluence of Knowledge Streams

Simultaneous measurement of core electron temperature and density fluctuations during electron cyclotron heating on DIII-D

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dc.contributor Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
dc.contributor White, Anne E.
dc.contributor White, Anne E.
dc.creator White, Anne E.
dc.creator Schmitz, L.
dc.creator Peebles, W. A.
dc.creator Rhodes, T. L.
dc.creator Carter, T. A.
dc.creator McKee, G. R.
dc.creator Shafer, M. W.
dc.creator Staebler, G. M.
dc.creator Burrell, K. H.
dc.creator DeBoo, J. C.
dc.creator Prater, R.
dc.date 2011-10-12T18:35:03Z
dc.date 2011-10-12T18:35:03Z
dc.date 2010-02
dc.date 2009-10
dc.date.accessioned 2023-03-01T18:06:32Z
dc.date.available 2023-03-01T18:06:32Z
dc.identifier 1070-664X
dc.identifier 1089-7674
dc.identifier http://hdl.handle.net/1721.1/66225
dc.identifier White, A. E. et al. “Simultaneous measurement of core electron temperature and density fluctuations during electron cyclotron heating on DIII-D.” Physics of Plasmas 17 (2010): 020701. © 2010 American Institute of Physics
dc.identifier https://orcid.org/0000-0003-2951-9749
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278778
dc.description New measurements show that long-wavelength (kθρs<0.5)[(k subscript theta p subscript s <o.5)] electron temperature fluctuations can play an important role in determining electron thermal transport in low-confinement mode (L-mode) tokamak plasmas. In neutral beam-heated L-mode tokamak plasmas, electron thermal transport and the amplitude of long-wavelength electron temperature fluctuations both increase in cases where local electron cyclotron heating (ECH) is used to modify the plasma profiles. In contrast, the amplitude of simultaneously measured long-wavelength density fluctuations does not significantly increase. Linear stability analysis indicates that the ratio of the trapped electron mode (TEM) to ion temperature gradient (ITG) mode growth rates increases in the cases with ECH. The increased importance of the TEM drive relative to the ITG mode drive in the cases with ECH may be associated with the increases in electron thermal transport and electron temperature fluctuations.
dc.description United States. Dept. of Energy. (Contract no. DE-FG02-89ER53296)
dc.description United States. Dept. of Energy. (Contract no. DE-FG03-01ER54615)
dc.description United States. Dept. of Energy. (Contract no. DE-AC05-06IR23100)
dc.description United States. Dept. of Energy. (Contract no. DE-FC02-04ER54698)
dc.format application/pdf
dc.language en_US
dc.publisher American Institute of Physics
dc.relation http://dx.doi.org/10.1063/1.3318469
dc.relation Physics of Plasmas
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.source AIP
dc.title Simultaneous measurement of core electron temperature and density fluctuations during electron cyclotron heating on DIII-D
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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